Trapped Electrons in Irradiated Quartz and Silica: I, Optical Absorption

Evidence is given for the correlation between an optical absorption band at 2300 au and an electron spin reso nance system developed in quartz after Co/ sup 60/ gamma irradiation. The results of bleaching gamma irradiated quartz and silica at 78 deg K and at room temperature are presented and discussed. Also, further observations upon annealing these color centers are given. (auth)